understanding memory timings and their theoretical max speeds

[pandaflux]

how are nanosecond memory timings correlated with mhz speeds?

example: 8, 7.5, 7, 6, 5 etc - memory timings are often seen on sdram sticks, cache chips, video cards - speaking from a megahertz point of view, and disregarding access cycles, what is the top speed each memory timing can handle?

if someone could write out a list or point me to a page where this is explained i would be grateful.

thanks,
matthew

sorry if you feel this is in the wrong forum, but due to the fact that i will be overclocking memory i find it appropriate.

 

[Rand]

Their rated speeds are as followed....

8ns= 125MHz
7.5ns= 133MHz
7ns= 142MHz
6.5ns= 153MHz
6ns= 166MHz
5.5ns= 181MHz
5ns= 200MHz

*Remember, due to voltage concerns and other such reasons it's rated speed is often only an extremely rough guideline as to it's capabilities.

As a rough and quick method simply divide the rated 'ns' by 1000.